Hi all, first post, could have been on better terms... Purchased a GP760 for dirt that had decent compression (130 in the front and around 125 in the rear). Went through a carb rebuild, cleaned the fuel tank out. It ran great for a few weeks. Had it's first hiccup in Homasassa on the 4th, it was running great then just died, waited a bit and it would start up, run for about 30 seconds and died. gat a tow back to the dock and pulled it. Got it back to Orlando, started up fine on the hose and ran fore a few minutes no problems. Took it out this past weekend to keep some time on it for a cruise around the lake and all was good until it started doing the same thing after about 30 minutes of just cruising around. Waited a bit and it fired back up and i headed back to the dock, about 30 seconds later it died again, but no sputter, just death, and hard stop. No noise when I hit the start switch. Got a tow in, pulled it, popped the plugs off, back hole was tan/brown, front hole completely black (Plugs were changed after homasassa). Pulled the coupling cover off and with the plugs out, she was locked up solid. Started pulling the motor right away, got it out and on the bench and found immediately that the flywheel housing on the case is cracked???? Pulled down the cylinders, and the back rod had seized. Something got hot. I'm trying to work my way to diagnose the issue further The water jacket on the back cylinder is about 35% full of small shells, not helping things. The carbs are set to run pretty rich with a 40-1 mix, I'm pretty sure it is responsible for the death of a few polar bears.
I've attached some pics, I wanted to get some opinions from someone who is smarter than me as to whether the case can be saved/welded. Also any potential leads to shake down and find the culprit to this engines demise. It could very well be that this engine had never seen the light of day since it was assembled as the ski only has 168 hours on it, and it's a 1997. So I'm throwing about 60% into age. I do not know how long it sat before I bought it, as it came by way of a third party. So it's possible it sat for a year or seven, as I had to do a fair amount of glasswork to the keel and 2x4 trailer bunk size hole in the upper hull.
Anyways, sorry for novel, and thanks in advance!
-Ryan
I've attached some pics, I wanted to get some opinions from someone who is smarter than me as to whether the case can be saved/welded. Also any potential leads to shake down and find the culprit to this engines demise. It could very well be that this engine had never seen the light of day since it was assembled as the ski only has 168 hours on it, and it's a 1997. So I'm throwing about 60% into age. I do not know how long it sat before I bought it, as it came by way of a third party. So it's possible it sat for a year or seven, as I had to do a fair amount of glasswork to the keel and 2x4 trailer bunk size hole in the upper hull.
Anyways, sorry for novel, and thanks in advance!
-Ryan
